Quick-change radio antenna mount



July 13, 1948. B, M. MEADOR QUICK CHANGE RADIO ANTENNA MOUNT Filed Aug. 11, 1944 INVENTOR. 5mm! ammo Ara/1 Q M Patented July 13, 1948 PATENT g mmflfil v v n I 1- a QUICK GHANGERADIO ANWNNN-MOUNT l Bernal MnMeador, Dayitma cmios U Application August'll, 1944 3seria Not-tiezosc' 4 o1aimsi (crews-94a) (Granted under" the act off'mareriia- 1883;; amendediApriY30, 192815-3700? ii-7'57) 'I'he inventionedescribed herein maybemanm factured and :used by or Q for; the 1 Government for:governmentallpurposes,withoutlthe payment tor-me of 'any; royalty. thereon.

The invention to be hereinafter describedire 7 lates-to antennamounting. and more particularly toaquickich'ahg'e antenna. mounting; v

Inmmounting;antennasin the skin of'an"air plane, one common practice; has" been 'to' first mount them, in an antenna Jsupportingor' mounting disc; plate 'or the like and "to flthenv mount thatldiscun; a sleeve, pup OIQt1'lBIff anchoring supportlsecuredin theskin" of "the-plane; suitable spring cushioning. 'or'iSHO'Ck 'ab's'o'rbingj devices being-jinterposed;;'to adequately protect. The assembly'; asla Whole; isrooinpli'catd;involvesa number of parts", and. provides 'IIQ" way ior' -re movalfandt repl'a'cerne'ntfl of the" antenna; selec-'- tively," from "either? side:- ordifction; By that construction v the' antenna m'ovedf'or'renewetilf-fro'n'i th'e one side} only.

The present invention; avoids the flahove" and other objections and-providesa simple; fiieient; compact*and"quickly" removable and replaceable replacedfromeither smear-shaman and-there f' 'Jr'e',-'jfrrimei-tl'ierfthe-outside or i the 'ins'ide ot a planesf' It compietely-eliminates thefcupl OrIa-ri; chorin'gdevicesecured directIY tdthe plane skin and" to'-wiii'ch the disc isj adapted to be: coupled; and? along with" it; thewushioningror: sh'o ck iab= sorting-'- dviees betweemit f and one idisc; Ih order 'tii more clearly disclo-seethe' constriicr ionand use-oi:tiieiinvention; refer:-

eri U hadqto tire' accomp'anyingl:draw ings formingpart: ofitthecpresentr application.

sembled showing the preferred!mountingrdisc:

The drawing illustrates the invention as apbaweu, understood; readily applicable Qtamanii lidLto atrsleeve type jof. antenna, ias onegitypie fto which-,thetinventioninapplicable. ,;,It,is a'sjwill' other/types. of lantennas, illus tration, ;ofjl t typebeingnuflicienteto amply. disclose; vention- I 1:111. the preferred -formio'f the invention; plate unlike-antenna mounting mean L11 p 7 vided and'adantedltobe seeuredjwitninthe' ki ofr aiplane, .assbx'bjolt's .orQlike \connectingi 'imeans oridevicest."Varioussforms of connecting' ,pl tes may be used such as rectangular, commonly'us'ed with.v stub .yantennas circular, commonly used. with; s1eeve-type ..antennas, etc. It isjprovi'ded with. a, centrally disposedi cylindrical; sleeve: or collar 2jextending;continuously from both fa 'es of f' plate I In "this form; the tubular 'Qsl'eeve' s smooth bored to slid-211015 recei e-a' cou l'ing block} which, is rigidly securedigto the' s eve ofia sleeve' typei antennagasbyswaging h ing" on; "or" otherwise suitably c onr'i'ec mg, predetermined ifixed; position. 1 1 Q1 thris lilo if" desired; may "be internally threaded" toepop' erate-viitwthre ads? on the =sleeve,- andtlie-*=adjus'tmerit-0131" the' blocli lengthwis' e 'of tl'ie evepredetermin' the eXtntofprojection tenna beyo'nd the plate I; may-"be made-1 field at the ti'nie of fina1 mountingof th tenna: l Such adjustment ma i be -made simply ETti'aVelIing E-MCK@more or less along tlie ''drw threads" of tlie sleeves; i W "Iii the present "invention, at" -the *plant 'wliere th'e 'ant'enna assembly or 'u'nit is produced, bleek 3 is properly positioned on the sleeveof theifan ten'na-f to' give the predetermined projection of the'antenn'a;lwtierr-fiiially assembled? for *usevon tlfie' sk il'l flf a"plane -f or "instancez "It* is then rig idly "-secured on "the sleeve" *of "the -ant'enna, agains't longi'tii'dina1 movementil In' sub'stance; it loecori es a7 'fiiiedmart' bf-the antennai'rsleeve. Ble'clt 3* is 'oi' an exterior diameter -suhstantially equalitti the interiordiarneteri'ofisleeveiz iso-tiiat, imassembled' relation; block 3 ifi'lls th'e'era'dia-l spaee between the 'fantenna isleeve andzrs'leeveiwl. It is of the same length as sleevewzic In assembledzrei'ationzreadycfoieoperationiithesendsi of hloclrwgiiw/ittiin sleeve 2 wilhelie flushaandr with the ends of sleeve: e 'Ihisawilluproperlwloe catelrtheantenna so than it will rproj ectq-tofrthe desiredaextent beyondetheemountings plate It I: Elie secure i-the-rantennaw inthis adjusted position, threaded cap nuts- 4; havingnradialtfiangesi5,;are pruvidedmnefor eachv-endiofisleeveiza Bytturne inge these :capnnuts son, asteach. end, runtilttheir respective flan es V In overl p, andmlie agadnst the 3 flush ends of sleeve 2 and block 3, the block 3 may be positively and securely held within sleeve 2, with the antenna definitely positioned with the correct predetermined amount of projection.

By unscrewing either of the cap nuts 4 the antenna may be easily and quickly removed and a new one asquickly substituted.

A somewhat simpler and preferred form is shown in Figs. 6 and '7 where the cap nuts and threading on sleeve 2 are omitted. Instead, block 3 is provided with two short longitudinal notches 6 in longitudinal alignment, each extending from the respective end towards the'opposite end of the block. Cooperating with these notches are corresponding set screws 1 in sleeve 2, longitudinally aligned. These screws are adapted to be seated in notches 6. The notches 6 are so proportioned and the cooperating set screws 1 are so placed in sleeve 2 that when both screws are turned in to the point where their ends extendinto the notches 6, they will engage the end walls of the notches. Block 3 will then belocked in sleeve 2 with the ends of block 3 flush with the ends of sleeve 2,.just as when the cap nuts 4 of the first embodiment are in position. The screw and notch arrangement is simpler and quicker acting while being just as positive and fully as efficient. Obviously other suitable connections may be substituted. By backing out either set screw the antenna may be readily withdrawn through that end of the sleeve 2. V

By either of the above constructions and arrangements the antenna with its block 3 may be easily and quickly removed from its mounting plate and another antenna, arranged or set for the proper projection, may be as quickly and easily substituted.

An outstanding characteristic of this invention is the fact that the antenna may be installed with equal ease, speed andcertainty from either side of the plate. This is particularly desirable for use in planes as it enables ready application either outwardly through the plane skin from within or inwardly through the plane skin from without.

As shown in the drawing, the antenna is pro vided with the usual coaxial connector.

While a known type of sleeve antenna with which the invention may bereadily used has been shown in the drawings .it will be well understood that the invention may be used with various other types of antennas such as split-can, stub, whip, wire, etc.

In order to have the invention applicable it is only necessary that the mounting plate I shall have a centrall disposed openin therethrough of a configuration and size to closely receive the respective antenna and that means he provided for positively and removably securing within such opening the respective antenna in a definite predetermined position with freedom of selective withdrawal and renewal of the antenna through said opening in either direction along the axis of that opening.

It is thought that the construction, operation and use of the invention will be clear from the preceding detailed description.

Changes may be made in the construction, arrangement and disposition of the parts of the invention within the scope of the appended claims without departing from the field of the invention and it is meant to include all such within this application wherein only one preferred form and one modification have been illustrated, purely by 7 for securing said block wholly within said tubular sleeve.

2. An antenna mounting comprising a plate provided with a tubular sleeve extending therethrough and to an appreciable distance beyond either face thereof, an antenna having a cooperating block of substantially the same exterior dimensions as the interior dimensions of said tubular sleeve and cap nuts carried by said sleeve and engaging said block and retainin it wholly within said sleeve while at the same time permitting removal and insertion thereof in either direction.

3. An antenna mounting comprising a plate provided with a tubular sleeve extending therethrough and to an appreciable distance beyond either face thereof, an antenna having a cooperating block of substantially the same exterior dimensions as the interior dimensions of said tubular sleeve fixed to said antenna at a predetermined point longitudinally thereof, said block being provided with longitudinal locking notches and locking means cooperating with said notches to securely lock said block wholly within said tubular sleeve, the aforesaid notches and locking means permitting free removal and reinsertion of said antenna in either direction.

4. An antenna mounting comprising a plate provided with a tubular sleeve extending therethrough and to an appreciable distance beyond either face thereof, an antenna having a coopcrating block of substantially the same exterior dimensions as the interior dimensions of said tubular sleeve fixed to said antenna at a predetermined point longitudinall thereof, said block being provided with looking notches extending longitudinally inwardly from its opposite ends and locking means carried in the aforesaid sleeve in position to be aligned with said notches, said locking means being longitudinally spaced a distance approximately equal to the minimum longitudinal distance beween the aforesaid notches, said locking means cooperating with said notches to securely lock said block wholly within said tubular sleeve while permitting free removal and reinsertion of said antenna in either direction.

BERNAL M. MEADOR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 312,193 Duffy Feb. 10, 1885 463,890 Cross Nov. 24, 1891 1,391,396 McMurtrie Sept. 20, 1921 1,802,353 Rousek et al Apr. 28, 1931 2,140,441 Clark Dec. 13, 1938 2,157,918 Rankin May 9, 1939 2,203,760 Wilckens June 11, 1940 

